title: Characterisation of very low frequency oscillations in laser Doppler perfusion signals with a singular spectrum analysis.
abstract: Laser Doppler (LD) perfusion signals consist of a number of superimposed frequencies that span a wide range. Singular spectrum analysis (SSA) was used to characterise the very low frequency (VLF) components as this method can extract frequencies of interest from the time domain. Its utility is demonstrated on a sex health clinical data set where the focus was on VLF oscillations. A significant change in this frequency range can be measured with SSA when the subject is undergoing erotic stimulation.
authors.affiliation: Pfizer Global Research and Development, Ramsgate Road, Sandwich CT13 9NJ, UK. david-olivier.azulay@pfizer.com
authors.forename: David-Olivier
authors.initials: DO
authors.lastname: Azulay
authors.forename: Phil
authors.initials: P
authors.lastname: Brain
authors.forename: Stefan R
authors.initials: SR
authors.lastname: Sultana
mesh_terms: D001143:Arousal / Q000502:physiology; D004882:Erotica; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D017078:Laser-Doppler Flowmetry / Q000379:methods*; D010775:Photic Stimulation; D012039:Regional Blood Flow / Q000502:physiology; D012815:Signal Processing, Computer-Assisted; D014621:Vagina / Q000098:blood supply; D058067:Wavelet Analysis